Spoiler alert, it does not involve finding the best glass cleaner.  With that stated, Gyeon Glass is my favorite all around glass cleaner.  But I would not replace these tips for the latest and greatest glass cleaner.  Any safe and reputable cleaning product would do.

My Glass Cleaning Tips

• Gloves, wearing these became a game changer.  (From watching Jim White of White Details)
• Use plenty of quality microfiber towels.
• Evaluating your environment and time your car is dirty.  A clay bar or glass polishing of the windshield may be a good idea.  If you have been doing a lot of driving on the highway and over the months cleaning glass has become more difficult, an alternative to smearing around what may be bonded grime.
• Bonus Tip: Ceramic coatings make glass easier to clean.

Products:

Nitrile Gloves
Clay
Microfiber Glass Towels
Aquatek Clarity Ceramic Coating For Glass